Excavator



FIG. 1 is a top front perspective view of an excavator showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the Figures show unclaimed portions of the excavator and form no part of the claimed design. 

CLAIM The ornamental design for an excavator, as shown and described. 